Specifically, it causes urethritis (inflammation of the urinary tract) both in men and women, and also cervicitis (inflammation of cervix) and pelvic inflammation in women.
After the stinging nettle enters its flowering and seed setting stages the leaves develop gritty particles called cystoliths, which can irritate the urinary tract.
It causes inflammation in the urethra (urethritis) both in men and women, which is associated with mucopurulent discharge in the urinary tract, and burning while urinating.